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Finding the Fourth Proportional to 448,337.66, 669,649.14 and 405,577.30

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Solution

The fourth proportional to 448,337.66, 669,649.14 and 405,577.30 is: 605,781.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,337.66 : 669,649.14 = 405,577.30 : x
  2. Step 2: Convert to fraction form
    448,337.66/669,649.14 = 405,577.30/x
  3. Step 3: Cross multiply
    448,337.66x = 669,649.14 × 405,577.30
  4. Step 4: Simplify right side
    448,337.66x = 271,594,486,953.48
  5. Step 5: Solve for x
    x = 271,594,486,953.48/448,337.66
  6. Step 6: Final answer
    x = 605,781.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.